>> Been poking at a PPC based linux system lately. Now, if I've been correctly >> informed (and my photagrafik memory isn't playing tricks on me) the Apple PP >C >> platforms lacks an RTC compatible device. >> >> Major stumbling block... how does one accomplish an high resolution timer in > >> this environment, any ideas? >> >> What does a Mac use? > >It's called the Time Base register. See the CPU frequency scaling >thread from last month's jackit-devel archives for a discussion.
unrelated, i believe. the RTC on intel machines is basically a crystal with a configurable interrupt interval. AFAIK, the time base register on PPC is equivalent to the TSC on x86, and if so, it cannot generate interrupts. --p
